Characterization and analysis methods for the examination of the heterogeneous solid oxide fuel cell electrode microstructure. Part 1: Volumetric measurements of the heterogeneous structure
Characterization and analysis methods for the examination of the heterogeneous solid oxide fuel cell electrode microstructure. Part 1: Volumetric measurements of the heterogeneous structure
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DOI：
10.1016/j.jpowsour.2010.07.005
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发表时间：
2010-12-15
影响因子：
9.2
通讯作者：
Chiu, Wilson K. S.
中科院分区：
文献类型：
--
作者：
Grew, Kyle N.;Peracchio, Aldo A.;Chiu, Wilson K. S.
先进的成像和表征方法允许高密度和不透明样品的三维和相位特定重建，这些样品的长度尺度在几十纳米左右，由具有大x射线质量吸收系数的材料组成。工程材料，如固体氧化物燃料电池（SOFC）电极，使用复杂的材料，通常有有限的机会进行3-D表征和分析。然而，表征和分析方法需要更好地了解这些结构和它们的功能影响。本文讨论了作者用于表征和分析非均质SOFC阳极的方法的开发、验证和验证[1,2]。这些方法包括测量单个相的体积分数、连续性或体积连通性、弯曲度和界面性质。这项工作的第二部分和补充部分将检查定量方法，提供结构及其与必须支持[3]的运输过程的关系的详细描述。这些努力旨在描述为深入了解SOFC阳极纳米/微观结构而开发的方法的制定。(C) 2010 Elsevier B.V.版权所有
Advanced imaging and characterization methods have permitted the 3-D and phase-specific reconstruction of dense and opaque samples with features that have a length scale on the order of tens of nanometers and comprised of materials with large X-ray mass absorption coefficients. Engineered materials, like those found in solid oxide fuel cell (SOFC) electrodes, use complex materials that have often limited opportunities to perform 3-D characterization and analysis. Still, characterization and analysis methods are needed to better understand these structures and their functional impact. The development, verification, and validation of methods used by the authors for the characterization and analysis of the heterogeneous SOFC anode are discussed in this work [1,2]. These methods include the measurement of the volume fractions of the individual phases, contiguity or volumetric connectivity, tortuosity, and interfacial properties. A second and complementary part of this work will examine quantitative methods that provide detailed descriptions of the structure and its relations to the transport processes that it must support [3]. These efforts are intended to describe the formulation of methods developed to provide insight into the SOFC anode nano/microstructure. (C) 2010 Elsevier B.V. All rights reserved.